content: // Protocol Buffers - Google's data interchange format
  // Copyright 2008 Google Inc.  All rights reserved.
  // https://developers.google.com/protocol-buffers/
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  //     * Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  //     * Redistributions in binary form must reproduce the above
  // copyright notice, this list of conditions and the following disclaimer
  // in the documentation and/or other materials provided with the
  // distribution.
  //     * Neither the name of Google Inc. nor the names of its
  // contributors may be used to endorse or promote products derived from
  // this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  package com.google.protobuf;
  
  import static java.util.Arrays.asList;
  
  import com.google.protobuf.Internal.BooleanList;
  import java.util.Collections;
  import java.util.ConcurrentModificationException;
  import java.util.Iterator;
  import junit.framework.TestCase;
  
  /**
   * Tests for {@link BooleanArrayList}.
   *
   * @author dweis@google.com (Daniel Weis)
   */
  public class BooleanArrayListTest extends TestCase {
  
    private static final BooleanArrayList UNARY_LIST =
        newImmutableBooleanArrayList(true);
    private static final BooleanArrayList TERTIARY_LIST =
        newImmutableBooleanArrayList(true, false, true);
  
    private BooleanArrayList list;
  
    @Override
    protected void setUp() throws Exception {
      list = new BooleanArrayList();
    }
  
    public void testEmptyListReturnsSameInstance() {
      assertSame(BooleanArrayList.emptyList(), BooleanArrayList.emptyList());
    }
  
    public void testEmptyListIsImmutable() {
      assertImmutable(BooleanArrayList.emptyList());
    }
  
    public void testMakeImmutable() {
      list.addBoolean(true);
      list.addBoolean(false);
      list.addBoolean(true);
      list.addBoolean(true);
      list.makeImmutable();
      assertImmutable(list);
    }
  
    public void testModificationWithIteration() {
      list.addAll(asList(true, false, true, false));
      Iterator<Boolean> iterator = list.iterator();
      assertEquals(4, list.size());
      assertEquals(true, (boolean) list.get(0));
      assertEquals(true, (boolean) iterator.next());
      list.set(0, true);
      assertEquals(false, (boolean) iterator.next());
  
      list.remove(0);
      try {
        iterator.next();
        fail();
      } catch (ConcurrentModificationException e) {
        // expected
      }
  
      iterator = list.iterator();
      list.add(0, false);
      try {
        iterator.next();
        fail();
      } catch (ConcurrentModificationException e) {
        // expected
      }
    }
  
    public void testGet() {
      assertEquals(true, (boolean) TERTIARY_LIST.get(0));
      assertEquals(false, (boolean) TERTIARY_LIST.get(1));
      assertEquals(true, (boolean) TERTIARY_LIST.get(2));
  
      try {
        TERTIARY_LIST.get(-1);
        fail();
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
  
      try {
        TERTIARY_LIST.get(3);
        fail();
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
    }
  
    public void testGetBoolean() {
      assertEquals(true, TERTIARY_LIST.getBoolean(0));
      assertEquals(false, TERTIARY_LIST.getBoolean(1));
      assertEquals(true, TERTIARY_LIST.getBoolean(2));
  
      try {
        TERTIARY_LIST.get(-1);
        fail();
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
  
      try {
        TERTIARY_LIST.get(3);
        fail();
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
    }
  
    public void testSize() {
      assertEquals(0, BooleanArrayList.emptyList().size());
      assertEquals(1, UNARY_LIST.size());
      assertEquals(3, TERTIARY_LIST.size());
  
      list.addBoolean(true);
      list.addBoolean(false);
      list.addBoolean(false);
      list.addBoolean(false);
      assertEquals(4, list.size());
  
      list.remove(0);
      assertEquals(3, list.size());
  
      list.add(true);
      assertEquals(4, list.size());
    }
  
    public void testSet() {
      list.addBoolean(false);
      list.addBoolean(false);
  
      assertEquals(false, (boolean) list.set(0, true));
      assertEquals(true, list.getBoolean(0));
  
      assertEquals(false, (boolean) list.set(1, false));
      assertEquals(false, list.getBoolean(1));
  
      try {
        list.set(-1, false);
        fail();
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
  
      try {
        list.set(2, false);
        fail();
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
    }
  
    public void testSetBoolean() {
      list.addBoolean(true);
      list.addBoolean(true);
  
      assertEquals(true, list.setBoolean(0, false));
      assertEquals(false, list.getBoolean(0));
  
      assertEquals(true, list.setBoolean(1, false));
      assertEquals(false, list.getBoolean(1));
  
      try {
        list.setBoolean(-1, false);
        fail();
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
  
      try {
        list.setBoolean(2, false);
        fail();
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
    }
  
    public void testAdd() {
      assertEquals(0, list.size());
  
      assertTrue(list.add(false));
      assertEquals(asList(false), list);
  
      assertTrue(list.add(true));
      list.add(0, false);
      assertEquals(asList(false, false, true), list);
  
      list.add(0, true);
      list.add(0, false);
      // Force a resize by getting up to 11 elements.
      for (int i = 0; i < 6; i++) {
        list.add(i % 2 == 0);
      }
      assertEquals(
          asList(false, true, false, false, true, true, false, true, false, true, false),
          list);
  
      try {
        list.add(-1, true);
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
  
      try {
        list.add(4, true);
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
    }
  
    public void testAddBoolean() {
      assertEquals(0, list.size());
  
      list.addBoolean(false);
      assertEquals(asList(false), list);
  
      list.addBoolean(true);
      assertEquals(asList(false, true), list);
    }
  
    public void testAddAll() {
      assertEquals(0, list.size());
  
      assertTrue(list.addAll(Collections.singleton(true)));
      assertEquals(1, list.size());
      assertEquals(true, (boolean) list.get(0));
      assertEquals(true, list.getBoolean(0));
  
      assertTrue(list.addAll(asList(false, true, false, true, false)));
      assertEquals(asList(true, false, true, false, true, false), list);
  
      assertTrue(list.addAll(TERTIARY_LIST));
      assertEquals(asList(true, false, true, false, true, false, true, false, true), list);
  
      assertFalse(list.addAll(Collections.<Boolean>emptyList()));
      assertFalse(list.addAll(BooleanArrayList.emptyList()));
    }
  
    public void testRemove() {
      list.addAll(TERTIARY_LIST);
      assertEquals(true, (boolean) list.remove(0));
      assertEquals(asList(false, true), list);
  
      assertTrue(list.remove(Boolean.TRUE));
      assertEquals(asList(false), list);
  
      assertFalse(list.remove(Boolean.TRUE));
      assertEquals(asList(false), list);
  
      assertEquals(false, (boolean) list.remove(0));
      assertEquals(asList(), list);
  
      try {
        list.remove(-1);
        fail();
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
  
      try {
        list.remove(0);
      } catch (IndexOutOfBoundsException e) {
        // expected
      }
    }
  
    public void testRemoveEndOfCapacity() {
      BooleanList toRemove = BooleanArrayList.emptyList().mutableCopyWithCapacity(1);
      toRemove.addBoolean(true);
      toRemove.remove(0);
      assertEquals(0, toRemove.size());
    }
  
    public void testSublistRemoveEndOfCapacity() {
      BooleanList toRemove = BooleanArrayList.emptyList().mutableCopyWithCapacity(1);
      toRemove.addBoolean(true);
      toRemove.subList(0, 1).clear();
      assertEquals(0, toRemove.size());
    }
  
    private void assertImmutable(BooleanArrayList list) {
  
      try {
        list.add(true);
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.add(0, true);
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.addAll(Collections.<Boolean>emptyList());
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.addAll(Collections.singletonList(true));
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.addAll(new BooleanArrayList());
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.addAll(UNARY_LIST);
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.addAll(0, Collections.singleton(true));
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.addAll(0, UNARY_LIST);
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.addAll(0, Collections.<Boolean>emptyList());
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.addBoolean(false);
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.clear();
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.remove(1);
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.remove(new Object());
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.removeAll(Collections.<Boolean>emptyList());
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.removeAll(Collections.singleton(Boolean.TRUE));
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.removeAll(UNARY_LIST);
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.retainAll(Collections.<Boolean>emptyList());
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.removeAll(Collections.singleton(Boolean.TRUE));
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.retainAll(UNARY_LIST);
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.set(0, false);
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
  
      try {
        list.setBoolean(0, false);
        fail();
      } catch (UnsupportedOperationException e) {
        // expected
      }
    }
  
    private static BooleanArrayList newImmutableBooleanArrayList(boolean... elements) {
      BooleanArrayList list = new BooleanArrayList();
      for (boolean element : elements) {
        list.addBoolean(element);
      }
      list.makeImmutable();
      return list;
    }
  }
  